oj.uz

Submission #863374

# Submission time Handle Problem Language Result Execution time Memory
863374 2023-10-20T06:02:44 Z maks007 Paths (BOI18_paths) C++14
0 / 100
 3000 ms 22608 KB 
// Bismi Allah
#include "bits/stdc++.h"

using namespace std;

#define int long long

signed main () {
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	int n, m, k, ans = 0, changes = 1;
	cin >> n >> m >> k;
	vector <int> color(n), g[n], used(n), permutation(k);
	set <int> colorUsed;
	function <void(int, int)> dfs=[&](int v, int cur) {
		if(cur >= changes) {
			ans++;
		}
		if(cur == permutation.size() - 1) return;
		used[v] = 1;
		for(auto u : g[v] ) {
			if(!used[u] && color[u] == permutation[cur+1]) dfs(u, cur + 1);
		}
		used[v]=0;
	};
	
	for(int i = 0; i < n; i ++) cin >> color[i];
	for(int i = 0; i < m; i ++) {
		int u, v;
		cin >> u >> v;
		u --, v --;
		g[u].push_back(v);
		g[v].push_back(u);
	}
	vector <int> prev;	
	for(int i = 0; i < k; i ++) permutation[i] = i + 1;
	do{
		/*if(prev.size() > 0) {
			for(int i = 0; i < permutation.size(); i ++) {
				if(prev[i] != permutation[i]) {
					changes = i;
					break;
				}
			}
			changes = max(changes, 1LL);
		}*/
		for(int i = 0; i < n; i ++) {
			if(color[i] == permutation[0]) dfs(i, 0);
		}
		//prev = permutation;
	} while(next_permutation(permutation.begin(), permutation.end()));		
	
	cout << ans;
	return 0;
}

Compilation message

paths.cpp: In lambda function:
paths.cpp:19:10: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |   if(cur == permutation.size() - 1) return;
      |      ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 419 ms 7820 KB Output is correct
2 Correct 2121 ms 7764 KB Output is correct
3 Correct 258 ms 22608 KB Output is correct
4 Correct 67 ms 9580 KB Output is correct
5 Correct 78 ms 9700 KB Output is correct
6 Execution timed out 3053 ms 17064 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -